how to insert values into an input using jquery inside a foreach loop using this operator

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Javascript

jQuery

here im reading values from table rows of certain class using this its work fine but i need to insert values to the input of the same row like this please help me to correct

$("#sub").click(function (){
    var qnty=0,rateperkg=0,grossval=0;
      $("#item tr.item-row").each(function() {
qnty=$(this).find(".qnty").val();
         rateperkg=$(this).find(".rateperkg").val();
           
grossval=qnty*rateperkg;

            alert(grossval);


$(this).val(".grossval")=grossval;
            });
    
});